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gtk/gdk/win32/gdkdrawable-win32.c
Tor Lillqvist bc1ec5c14a Massive changes. Too many to list here, but I'll try a summary: 
2002-02-17  Tor Lillqvist  <tml@iki.fi>

	* gdk/win32/*.c: Massive changes. Too many to list here, but I'll
	try a summary:

	1) Unify GdkPixmap and GdkImage implementation: For each
	GdkPixmap, allocate a GdkImage, and vice versa.
	GdkPixmapImplWin32Data has a pointer to the GdkImage.
	GdkImage::windowing_data is a pointer to the GdkPixmap.

	This simplifies many pixmap and image related functions a lot, and
	reduces duplicated code snippets. For instance, there is only one
	place in gdk/win32 where CreateDIBSection() is called, in the
	function _gdk_win32_new_pixmap(). Converting a bitmap (GdkPixmap)
	to a Windows region is almost trivial, with the bitmap bits being
	readily accessible in the associated GdkImage.

	All blitting between GdkPixmaps, GdkWindows and GdkImages goes
	through handled the _gdk_win32_blit() function, which calls
	different functions to handle the cases of blitting from pixmaps,
	inside windows (scrolling), or from windows, which all require
	somewhat different handling.

	2) Support 256-color mode. This has long been very broken, now it
	works more or less OK. Keep the logical palette for each colormap
	as small as possible while allocating and freeing colors. Select
	and realize the logical palette associated with a GdkColormap into
	a DC before drawing or blitting.

	When the display is in 256-color mode, make it possible for the
	user to override the size of the palette(s) used with either the
	GDK_WIN32_MAX_COLORS environment variable, or a -max-colors
	command line option. It is possible to reduce the palette size all
	the way down to using just the 16 static colors (which causes the
	system visual to be of type GDK_VISUAL_STATIC_COLOR. This could
	possibly be useful if one desperately wants to avoid color
	flashing. (Note that in order for this to work properly, an as of
	yet not commited fix to gdkrgb.c is needed.)

	Handle the palette messages. On WM_PALETTECHANGED, call
	UpdateColors() for the given window hierarchy. Do this only if a
	window in some other top-level window hierarchy caused the palette
	change (realized a palette). Do this max five times in a row (an
	arbitrarily chosen limit), though, otherwise redraw by generating
	expose events. On WM_QUERYNEWPALETTE, cause a redraw of the whole
	window hierarchy by generating GDK_EXPOSE events.

	3) Code cleanup in general. For instance, remove the "emulated"
	X11 structs ColormapStruct, Visual and XStandardColormap. Use the
	new GDK_DEBUG_* flags for debugging output in the relevant source
	files. Remove the unused colormap hash table in gdkcolor-win32.c

	4) Plug some resource leaks.

2002-02-14  Tor Lillqvist  <tml@iki.fi>

	* gdk/win32/gdkdnd-win32.c (gdk_dropfiles_filter): Use
	g_filename_to_uri() to actually create legal URIs in the
	text/uri-list data.
2002-02-17 00:25:05 +00:00

1275 lines
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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 1998-2002 Tor Lillqvist
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <math.h>
#include <stdio.h>
#include <glib.h>
#include <pango/pangowin32.h>
#include "gdkprivate-win32.h"
static void gdk_win32_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height);
static void gdk_win32_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2);
static void gdk_win32_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
GdkPoint *points,
gint npoints);
static void gdk_win32_draw_text (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const gchar *text,
gint text_length);
static void gdk_win32_draw_text_wc (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const GdkWChar *text,
gint text_length);
static void gdk_win32_draw_drawable (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
static void gdk_win32_draw_points (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
static void gdk_win32_draw_segments (GdkDrawable *drawable,
GdkGC *gc,
GdkSegment *segs,
gint nsegs);
static void gdk_win32_draw_lines (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
static void gdk_win32_draw_glyphs (GdkDrawable *drawable,
GdkGC *gc,
PangoFont *font,
gint x,
gint y,
PangoGlyphString *glyphs);
static void gdk_win32_draw_image (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
static void gdk_win32_set_colormap (GdkDrawable *drawable,
GdkColormap *colormap);
static GdkColormap* gdk_win32_get_colormap (GdkDrawable *drawable);
static gint gdk_win32_get_depth (GdkDrawable *drawable);
static GdkVisual* gdk_win32_get_visual (GdkDrawable *drawable);
static void gdk_drawable_impl_win32_class_init (GdkDrawableImplWin32Class *klass);
static void gdk_drawable_impl_win32_finalize (GObject *object);
static gpointer parent_class = NULL;
#ifdef G_ENABLE_DEBUG
gchar *
gdk_win32_drawable_description (GdkDrawable *d)
{
GdkVisual *v;
static gchar buf[1000];
static gchar *bufp = buf;
gchar *msg;
gint width, height;
gchar *retval;
gdk_drawable_get_size (d, &width, &height);
msg = g_strdup_printf
("%s:%p:%dx%dx%d",
G_OBJECT_TYPE_NAME (d),
GDK_DRAWABLE_HANDLE (d),
width, height,
(GDK_IS_PIXMAP (d) ? GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (d)->impl)->image->depth
: ((v = gdk_drawable_get_visual (d)) ? v->depth : gdk_visual_get_system ()->depth)));
if (bufp + strlen (msg) + 1 > buf + sizeof (buf))
bufp = buf;
retval = bufp;
strcpy (bufp, msg);
bufp += strlen (msg) + 1;
g_free (msg);
return retval;
}
#endif
GType
gdk_drawable_impl_win32_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (GdkDrawableImplWin32Class),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_drawable_impl_win32_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkDrawableImplWin32),
0, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
object_type = g_type_register_static (GDK_TYPE_DRAWABLE,
"GdkDrawableImplWin32",
&object_info, 0);
}
return object_type;
}
static void
gdk_drawable_impl_win32_class_init (GdkDrawableImplWin32Class *klass)
{
GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gdk_drawable_impl_win32_finalize;
drawable_class->create_gc = _gdk_win32_gc_new;
drawable_class->draw_rectangle = gdk_win32_draw_rectangle;
drawable_class->draw_arc = gdk_win32_draw_arc;
drawable_class->draw_polygon = gdk_win32_draw_polygon;
drawable_class->draw_text = gdk_win32_draw_text;
drawable_class->draw_text_wc = gdk_win32_draw_text_wc;
drawable_class->draw_drawable = gdk_win32_draw_drawable;
drawable_class->draw_points = gdk_win32_draw_points;
drawable_class->draw_segments = gdk_win32_draw_segments;
drawable_class->draw_lines = gdk_win32_draw_lines;
drawable_class->draw_glyphs = gdk_win32_draw_glyphs;
drawable_class->draw_image = gdk_win32_draw_image;
drawable_class->set_colormap = gdk_win32_set_colormap;
drawable_class->get_colormap = gdk_win32_get_colormap;
drawable_class->get_depth = gdk_win32_get_depth;
drawable_class->get_visual = gdk_win32_get_visual;
drawable_class->_copy_to_image = _gdk_win32_copy_to_image;
}
static void
gdk_drawable_impl_win32_finalize (GObject *object)
{
gdk_drawable_set_colormap (GDK_DRAWABLE (object), NULL);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/*****************************************************
* Win32 specific implementations of generic functions *
*****************************************************/
static GdkColormap*
gdk_win32_get_colormap (GdkDrawable *drawable)
{
return GDK_DRAWABLE_IMPL_WIN32 (drawable)->colormap;
}
static void
gdk_win32_set_colormap (GdkDrawable *drawable,
GdkColormap *colormap)
{
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
if (impl->colormap == colormap)
return;
if (impl->colormap)
gdk_colormap_unref (impl->colormap);
impl->colormap = colormap;
if (impl->colormap)
gdk_colormap_ref (impl->colormap);
}
/* Drawing
*/
static void
gdk_win32_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height)
{
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
HGDIOBJ old_pen_or_brush;
POINT pts[4];
gboolean ok = TRUE;
GDK_NOTE (MISC, g_print ("gdk_win32_draw_rectangle: %s (%p) %s%dx%d@+%d+%d\n",
gdk_win32_drawable_description (drawable),
gc_private,
(filled ? "fill " : ""),
width, height, x, y));
if (filled
&& (gc_private->tile)
&& (gc_private->values_mask & GDK_GC_TILE)
&& (gc_private->values_mask & GDK_GC_FILL))
{
_gdk_win32_draw_tiles (drawable, gc, gc_private->tile, x, y, width, height);
return;
}
hdc = gdk_win32_hdc_get (drawable, gc, mask);
#if 0
{
HBRUSH hbr = GetCurrentObject (hdc, OBJ_BRUSH);
HPEN hpen = GetCurrentObject (hdc, OBJ_PEN);
LOGBRUSH lbr;
LOGPEN lpen;
GetObject (hbr, sizeof (lbr), &lbr);
GetObject (hpen, sizeof (lpen), &lpen);
g_print ("current brush: style = %s, color = 0x%.08x\n",
(lbr.lbStyle == BS_SOLID ? "SOLID" : "???"),
lbr.lbColor);
g_print ("current pen: style = %s, width = %d, color = 0x%.08x\n",
(lpen.lopnStyle == PS_SOLID ? "SOLID" : "???"),
lpen.lopnWidth,
lpen.lopnColor);
}
#endif
if (gc_private->fill_style == GDK_OPAQUE_STIPPLED)
{
if (!BeginPath (hdc))
WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
/* Win9x doesn't support Rectangle calls in a path,
* thus use Polyline.
*/
pts[0].x = x;
pts[0].y = y;
pts[1].x = x + width + 1;
pts[1].y = y;
pts[2].x = x + width + 1;
pts[2].y = y + height + 1;
pts[3].x = x;
pts[3].y = y + height + 1;
if (ok)
MoveToEx (hdc, x, y, NULL);
if (ok && !Polyline (hdc, pts, 4))
WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
if (ok && !CloseFigure (hdc))
WIN32_GDI_FAILED ("CloseFigure"), ok = FALSE;
if (ok && !EndPath (hdc))
WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
if (ok && !filled)
if (!WidenPath (hdc))
WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
if (ok && !FillPath (hdc))
WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
}
else
{
if (filled)
old_pen_or_brush = SelectObject (hdc, GetStockObject (NULL_PEN));
else
old_pen_or_brush = SelectObject (hdc, GetStockObject (HOLLOW_BRUSH));
if (old_pen_or_brush == NULL)
WIN32_GDI_FAILED ("SelectObject");
else if (!Rectangle (hdc, x, y, x+width+1, y+height+1))
WIN32_GDI_FAILED ("Rectangle");
else
SelectObject (hdc, old_pen_or_brush);
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2)
{
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
int nXStartArc, nYStartArc, nXEndArc, nYEndArc;
GDK_NOTE (MISC, g_print ("gdk_draw_arc: %s %d,%d,%d,%d %d %d\n",
gdk_win32_drawable_description (drawable),
x, y, width, height, angle1, angle2));
/* Seems that drawing arcs with width or height <= 2 fails, at least
* with my TNT card.
*/
if (width <= 2 || height <= 2 || angle2 == 0)
return;
hdc = gdk_win32_hdc_get (drawable, gc, mask);
if (angle2 >= 360*64)
{
nXStartArc = nYStartArc = nXEndArc = nYEndArc = 0;
}
else if (angle2 > 0)
{
/* The 100. is just an arbitrary value */
nXStartArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
nYStartArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
nXEndArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
nYEndArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
}
else
{
nXEndArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
nYEndArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
nXStartArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
nYStartArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
}
/* GDK_OPAQUE_STIPPLED arcs not implemented. */
if (filled)
{
GDK_NOTE (MISC, g_print ("...Pie(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
x, y, x+width, y+height,
nXStartArc, nYStartArc,
nXEndArc, nYEndArc));
if (!Pie (hdc, x, y, x+width, y+height,
nXStartArc, nYStartArc, nXEndArc, nYEndArc))
WIN32_GDI_FAILED ("Pie");
}
else
{
GDK_NOTE (MISC, g_print ("...Arc(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
x, y, x+width, y+height,
nXStartArc, nYStartArc,
nXEndArc, nYEndArc));
if (!Arc (hdc, x, y, x+width, y+height,
nXStartArc, nYStartArc, nXEndArc, nYEndArc))
WIN32_GDI_FAILED ("Arc");
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
GdkPoint *points,
gint npoints)
{
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
POINT *pts;
gboolean ok = TRUE;
int i;
GDK_NOTE (MISC, g_print ("gdk_win32_draw_polygon: %s (%p) %d\n",
gdk_win32_drawable_description (drawable),
gc_private,
npoints));
if (npoints < 2)
return;
hdc = gdk_win32_hdc_get (drawable, gc, mask);
pts = g_new (POINT, npoints+1);
for (i = 0; i < npoints; i++)
{
pts[i].x = points[i].x;
pts[i].y = points[i].y;
}
if (gc_private->fill_style == GDK_OPAQUE_STIPPLED)
{
if (!BeginPath (hdc))
WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
if (ok)
MoveToEx (hdc, points[0].x, points[0].y, NULL);
if (pts[0].x == pts[npoints-1].x && pts[0].y == pts[npoints-1].y)
npoints--;
if (ok && !Polyline (hdc, pts, 4))
WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
if (ok && !CloseFigure (hdc))
WIN32_GDI_FAILED ("CloseFigure"), ok = FALSE;
if (ok && !EndPath (hdc))
WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
if (ok && !filled)
if (!WidenPath (hdc))
WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
if (ok && !FillPath (hdc))
WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
}
else
{
if (points[0].x != points[npoints-1].x
|| points[0].y != points[npoints-1].y)
{
pts[npoints].x = points[0].x;
pts[npoints].y = points[0].y;
npoints++;
}
if (filled)
{
if (!Polygon (hdc, pts, npoints))
WIN32_GDI_FAILED ("Polygon");
}
else
{
if (!Polyline (hdc, pts, npoints))
WIN32_GDI_FAILED ("Polyline");
}
}
g_free (pts);
gdk_win32_hdc_release (drawable, gc, mask);
}
typedef struct
{
gint x, y;
HDC hdc;
} gdk_draw_text_arg;
static void
gdk_draw_text_handler (GdkWin32SingleFont *singlefont,
const wchar_t *wcstr,
int wclen,
void *arg)
{
HGDIOBJ oldfont;
SIZE size;
gdk_draw_text_arg *argp = (gdk_draw_text_arg *) arg;
if (!singlefont)
return;
if ((oldfont = SelectObject (argp->hdc, singlefont->hfont)) == NULL)
{
WIN32_GDI_FAILED ("SelectObject");
return;
}
if (!TextOutW (argp->hdc, argp->x, argp->y, wcstr, wclen))
WIN32_GDI_FAILED ("TextOutW");
GetTextExtentPoint32W (argp->hdc, wcstr, wclen, &size);
argp->x += size.cx;
SelectObject (argp->hdc, oldfont);
}
static void
gdk_win32_draw_text (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const gchar *text,
gint text_length)
{
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_FONT;
wchar_t *wcstr, wc;
gint wlen;
gdk_draw_text_arg arg;
if (text_length == 0)
return;
g_assert (font->type == GDK_FONT_FONT || font->type == GDK_FONT_FONTSET);
arg.x = x;
arg.y = y;
arg.hdc = gdk_win32_hdc_get (drawable, gc, mask);
GDK_NOTE (MISC, g_print ("gdk_draw_text: %s (%d,%d) \"%.*s\" (len %d)\n",
gdk_win32_drawable_description (drawable),
x, y,
(text_length > 10 ? 10 : text_length),
text, text_length));
if (text_length == 1)
{
/* For single characters, don't try to interpret as UTF-8. */
wc = (guchar) text[0];
_gdk_wchar_text_handle (font, &wc, 1, gdk_draw_text_handler, &arg);
}
else
{
wcstr = g_new (wchar_t, text_length);
if ((wlen = _gdk_utf8_to_ucs2 (wcstr, text, text_length, text_length)) == -1)
g_warning ("gdk_win32_draw_text: _gdk_utf8_to_ucs2 failed");
else
_gdk_wchar_text_handle (font, wcstr, wlen, gdk_draw_text_handler, &arg);
g_free (wcstr);
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_text_wc (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const GdkWChar *text,
gint text_length)
{
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_FONT;
gint i;
wchar_t *wcstr;
gdk_draw_text_arg arg;
if (text_length == 0)
return;
g_assert (font->type == GDK_FONT_FONT || font->type == GDK_FONT_FONTSET);
arg.x = x;
arg.y = y;
arg.hdc = gdk_win32_hdc_get (drawable, gc, mask);
GDK_NOTE (MISC, g_print ("gdk_draw_text_wc: %s (%d,%d) len: %d\n",
gdk_win32_drawable_description (drawable),
x, y, text_length));
if (sizeof (wchar_t) != sizeof (GdkWChar))
{
wcstr = g_new (wchar_t, text_length);
for (i = 0; i < text_length; i++)
wcstr[i] = text[i];
}
else
wcstr = (wchar_t *) text;
_gdk_wchar_text_handle (font, wcstr, text_length,
gdk_draw_text_handler, &arg);
if (sizeof (wchar_t) != sizeof (GdkWChar))
g_free (wcstr);
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_drawable (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
g_assert (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable));
_gdk_win32_blit (FALSE, (GdkDrawableImplWin32 *) drawable,
gc, src, xsrc, ysrc,
xdest, ydest, width, height);
}
void
_gdk_win32_draw_tiles (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *tile,
gint x_from,
gint y_from,
gint max_width,
gint max_height)
{
gint x = x_from, y = y_from;
gint tile_width, tile_height;
gint width, height;
GDK_NOTE (MISC, g_print ("_gdk_win32_draw_tiles: %s tile=%s +%d+%d %d,%d\n",
gdk_win32_drawable_description (drawable),
gdk_win32_drawable_description (tile),
x_from, y_from, max_width, max_height));
gdk_drawable_get_size (drawable, &width, &height);
gdk_drawable_get_size (tile, &tile_width, &tile_height);
width = MIN (width, max_width);
height = MIN (height, max_height);
tile_width = MIN (tile_width, max_width);
tile_height = MIN (tile_height, max_height);
while (y < height)
{
x = x_from;
while (x < width)
{
gdk_draw_drawable (drawable, gc, tile,
x % tile_width, /* xsrc */
y % tile_height, /* ysrc */
x, y, /* dest */
tile_width, tile_height);
x += tile_width;
}
y += tile_height;
}
}
static void
gdk_win32_draw_points (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints)
{
HDC hdc;
COLORREF fg;
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
int i;
hdc = gdk_win32_hdc_get (drawable, gc, 0);
fg = _gdk_win32_colormap_color (impl->colormap, gc_private->foreground);
GDK_NOTE (MISC, g_print ("gdk_draw_points: %s %dx%.06x\n",
gdk_win32_drawable_description (drawable),
npoints, (guint) fg));
for (i = 0; i < npoints; i++)
SetPixel (hdc, points[i].x, points[i].y, fg);
gdk_win32_hdc_release (drawable, gc, 0);
}
static void
gdk_win32_draw_segments (GdkDrawable *drawable,
GdkGC *gc,
GdkSegment *segs,
gint nsegs)
{
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
gboolean ok = TRUE;
int i;
GDK_NOTE (MISC, g_print ("gdk_win32_draw_segments: %s nsegs: %d\n",
gdk_win32_drawable_description (drawable), nsegs));
hdc = gdk_win32_hdc_get (drawable, gc, mask);
if (gc_private->fill_style == GDK_OPAQUE_STIPPLED)
{
if (!BeginPath (hdc))
WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
for (i = 0; ok && i < nsegs; i++)
{
if (ok && !MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
WIN32_GDI_FAILED ("MoveToEx"), ok = FALSE;
if (ok && !LineTo (hdc, segs[i].x2, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
/* Draw end pixel */
if (ok && gc_private->pen_width <= 1)
if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
}
if (ok && !EndPath (hdc))
WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
if (ok && !WidenPath (hdc))
WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
if (ok && !FillPath (hdc))
WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
}
else
{
const gboolean maybe_patblt =
gc_private->rop2 == R2_COPYPEN &&
gc_private->pen_width <= 1 &&
(gc_private->pen_style & PS_STYLE_MASK) == PS_SOLID;
for (i = 0; ok && i < nsegs; i++)
{
/* PatBlt() is much faster than LineTo(), says
* jpe@archaeopteryx.com. Hmm. Use it if we have a solid
* colour pen, then we know that the brush is also solid and
* of the same colour.
*/
if (maybe_patblt && segs[i].x1 == segs[i].x2)
{
int y1, y2;
if (segs[i].y1 <= segs[i].y2)
y1 = segs[i].y1, y2 = segs[i].y2;
else
y1 = segs[i].y2, y2 = segs[i].y1;
if (!PatBlt (hdc, segs[i].x1, y1,
1, y2 - y1 + 1, PATCOPY))
WIN32_GDI_FAILED ("PatBlt"), ok = FALSE;
}
else if (maybe_patblt && segs[i].y1 == segs[i].y2)
{
int x1, x2;
if (segs[i].x1 <= segs[i].x2)
x1 = segs[i].x1, x2 = segs[i].x2;
else
x1 = segs[i].x2, x2 = segs[i].x1;
if (!PatBlt (hdc, x1, segs[i].y1,
x2 - x1 + 1, 1, PATCOPY))
WIN32_GDI_FAILED ("PatBlt"), ok = FALSE;
}
else
{
if (!MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
WIN32_GDI_FAILED ("MoveToEx"), ok = FALSE;
if (ok && !LineTo (hdc, segs[i].x2, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
/* Draw end pixel */
if (ok && gc_private->pen_width <= 1)
if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
}
}
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_lines (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints)
{
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
POINT *pts;
int i;
gboolean ok = TRUE;
if (npoints < 2)
return;
hdc = gdk_win32_hdc_get (drawable, gc, mask);
pts = g_new (POINT, npoints);
for (i = 0; i < npoints; i++)
{
pts[i].x = points[i].x;
pts[i].y = points[i].y;
}
if (!Polyline (hdc, pts, npoints))
WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
g_free (pts);
/* Draw end pixel */
if (ok && gc_private->pen_width <= 1)
{
MoveToEx (hdc, points[npoints-1].x, points[npoints-1].y, NULL);
if (!LineTo (hdc, points[npoints-1].x + 1, points[npoints-1].y))
WIN32_GDI_FAILED ("LineTo");
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_glyphs (GdkDrawable *drawable,
GdkGC *gc,
PangoFont *font,
gint x,
gint y,
PangoGlyphString *glyphs)
{
const GdkGCValuesMask mask = GDK_GC_FOREGROUND;
HDC hdc;
hdc = gdk_win32_hdc_get (drawable, gc, mask);
/* HB: Maybe there should be a GDK_GC_PANGO flag for hdc_get */
/* default write mode is transparent (leave background) */
if (SetBkMode (hdc, TRANSPARENT) == 0)
WIN32_GDI_FAILED ("SetBkMode");
if (GDI_ERROR == SetTextAlign (hdc, TA_LEFT|TA_BASELINE|TA_NOUPDATECP))
WIN32_GDI_FAILED ("SetTextAlign");
pango_win32_render (hdc, font, glyphs, x, y);
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
blit_from_pixmap (gboolean use_fg_bg,
GdkDrawableImplWin32 *dest,
HDC hdc,
GdkPixmapImplWin32 *src,
GdkGCWin32 *gcwin32,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
HDC srcdc;
HBITMAP holdbitmap;
RGBQUAD oldtable[256], newtable[256];
COLORREF bg, fg;
gint newtable_size = 0, oldtable_size = 0;
gboolean ok = TRUE;
GDK_NOTE (MISC, g_print ("blit_from_pixmap\n"));
if (!(srcdc = CreateCompatibleDC (NULL)))
{
WIN32_GDI_FAILED ("CreateCompatibleDC");
return;
}
if (!(holdbitmap = SelectObject (srcdc, ((GdkDrawableImplWin32 *) src)->handle)))
WIN32_GDI_FAILED ("SelectObject");
else
{
if (src->image->depth <= 8)
{
/* Blitting from a 1, 4 or 8-bit pixmap */
if ((oldtable_size = GetDIBColorTable (srcdc, 0, 256, oldtable)) == 0)
WIN32_GDI_FAILED ("GetDIBColorTable");
else if (src->image->depth == 1)
{
/* Blitting from an 1-bit pixmap */
gint bgix, fgix;
if (use_fg_bg)
{
bgix = gcwin32->background;
fgix = gcwin32->foreground;
}
else
{
bgix = 0;
fgix = 1;
}
if (GDK_IS_PIXMAP_IMPL_WIN32 (dest) &&
((GdkPixmapImplWin32 *) dest)->image->depth <= 8)
{
/* Destination is also pixmap, get fg and bg from
* its palette. Either use the foreground and
* background pixel values in the GC (only in the
* case of gdk_image_put(), cf. XPutImage()), or 0
* and 1 to index the palette.
*/
if (!GetDIBColorTable (hdc, bgix, 1, newtable) ||
!GetDIBColorTable (hdc, fgix, 1, newtable+1))
WIN32_GDI_FAILED ("GetDIBColorTable"), ok = FALSE;
}
else
{
/* Destination is a window, get fg and bg from its
* colormap
*/
bg = _gdk_win32_colormap_color (dest->colormap, bgix);
fg = _gdk_win32_colormap_color (dest->colormap, fgix);
newtable[0].rgbBlue = GetBValue (bg);
newtable[0].rgbGreen = GetGValue (bg);
newtable[0].rgbRed = GetRValue (bg);
newtable[0].rgbReserved = 0;
newtable[1].rgbBlue = GetBValue (fg);
newtable[1].rgbGreen = GetGValue (fg);
newtable[1].rgbRed = GetRValue (fg);
newtable[1].rgbReserved = 0;
}
if (ok)
GDK_NOTE (MISC, g_print ("bg: %02x %02x %02x "
"fg: %02x %02x %02x\n",
newtable[0].rgbRed,
newtable[0].rgbGreen,
newtable[0].rgbBlue,
newtable[1].rgbRed,
newtable[1].rgbGreen,
newtable[1].rgbBlue));
newtable_size = 2;
}
else if (GDK_IS_PIXMAP_IMPL_WIN32 (dest))
{
/* Destination is pixmap, get its color table */
if ((newtable_size = GetDIBColorTable (hdc, 0, 256, newtable)) == 0)
WIN32_GDI_FAILED ("GetDIBColorTable"), ok = FALSE;
}
/* If blitting between pixmaps, set source's color table */
if (ok && newtable_size > 0)
{
GDK_NOTE (MISC_OR_COLORMAP,
g_print ("blit_from_pixmap: set color table"
" hdc=%p count=%d\n",
srcdc, newtable_size));
if (!SetDIBColorTable (srcdc, 0, newtable_size, newtable))
WIN32_GDI_FAILED ("SetDIBColorTable"), ok = FALSE;
}
}
if (ok && !BitBlt (hdc, xdest, ydest, width, height,
srcdc, xsrc, ysrc, SRCCOPY))
WIN32_GDI_FAILED ("BitBlt");
/* Restore source's color table if necessary */
if (ok && newtable_size > 0 && oldtable_size > 0)
{
GDK_NOTE (MISC_OR_COLORMAP,
g_print ("blit_from_pixmap: reset color table"
" hdc=%p count=%d\n",
srcdc, oldtable_size));
if (!SetDIBColorTable (srcdc, 0, oldtable_size, oldtable))
WIN32_GDI_FAILED ("SetDIBColorTable");
}
if (!SelectObject (srcdc, holdbitmap))
WIN32_GDI_FAILED ("SelectObject");
}
if (!DeleteDC (srcdc))
WIN32_GDI_FAILED ("DeleteDC");
}
static void
blit_inside_window (GdkDrawableImplWin32 *window,
HDC hdc,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
RECT scrollRect, clipRect, emptyRect;
HRGN updateRgn;
GDK_NOTE (MISC, g_print ("blit_inside_window\n"));
scrollRect.left = MIN (xsrc, xdest);
scrollRect.top = MIN (ysrc, ydest);
scrollRect.right = MAX (xsrc + width + 1, xdest + width + 1);
scrollRect.bottom = MAX (ysrc + height + 1, ydest + height + 1);
clipRect.left = xdest;
clipRect.top = ydest;
clipRect.right = xdest + width + 1;
clipRect.bottom = ydest + height + 1;
SetRectEmpty (&emptyRect);
updateRgn = CreateRectRgnIndirect (&emptyRect);
if (!ScrollDC (hdc, xdest - xsrc, ydest - ysrc,
&scrollRect, &clipRect,
updateRgn, NULL))
WIN32_GDI_FAILED ("ScrollDC");
else if (!InvalidateRgn (window->handle, updateRgn, FALSE))
WIN32_GDI_FAILED ("InvalidateRgn");
else if (!UpdateWindow (window->handle))
WIN32_GDI_FAILED ("UpdateWindow");
if (!DeleteObject (updateRgn))
WIN32_GDI_FAILED ("DeleteObject");
}
static void
blit_from_window (HDC hdc,
GdkDrawableImplWin32 *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
HDC srcdc;
HPALETTE holdpal = NULL;
GdkColormap *cmap = gdk_colormap_get_system ();
GDK_NOTE (MISC, g_print ("blit_from_window\n"));
if ((srcdc = GetDC (src->handle)) == NULL)
{
WIN32_GDI_FAILED ("GetDC");
return;
}
if (cmap->visual->type == GDK_VISUAL_PSEUDO_COLOR ||
cmap->visual->type == GDK_VISUAL_STATIC_COLOR)
{
gint k;
if (!(holdpal = SelectPalette (srcdc, GDK_WIN32_COLORMAP_DATA (cmap)->hpal, FALSE)))
WIN32_GDI_FAILED ("SelectPalette");
else if ((k = RealizePalette (srcdc)) == GDI_ERROR)
WIN32_GDI_FAILED ("RealizePalette");
else if (k > 0)
GDK_NOTE (MISC_OR_COLORMAP,
g_print ("blit_from_window: realized %d\n", k));
}
if (!BitBlt (hdc, xdest, ydest, width, height,
srcdc, xsrc, ysrc, SRCCOPY))
WIN32_GDI_FAILED ("BitBlt");
if (holdpal != NULL)
SelectPalette (srcdc, holdpal, FALSE);
if (!ReleaseDC (src->handle, srcdc))
WIN32_GDI_FAILED ("ReleaseDC");
}
void
_gdk_win32_blit (gboolean use_fg_bg,
GdkDrawableImplWin32 *drawable,
GdkGC *gc,
GdkDrawable *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
HDC hdc;
HRGN src_rgn, draw_rgn, outside_rgn;
RECT r;
GdkDrawableImplWin32 *draw_impl;
GdkDrawableImplWin32 *src_impl;
gint src_width, src_height;
GDK_NOTE (MISC, g_print ("_gdk_win32_blit: src:%s %dx%d@+%d+%d\n"
" dst:%s @+%d+%d use_fg_bg=%d\n",
gdk_win32_drawable_description (src),
width, height, xsrc, ysrc,
gdk_win32_drawable_description ((GdkDrawable *) drawable),
xdest, ydest,
use_fg_bg));
draw_impl = (GdkDrawableImplWin32 *) drawable;
if (GDK_IS_DRAWABLE_IMPL_WIN32 (src))
src_impl = (GdkDrawableImplWin32 *) src;
else if (GDK_IS_WINDOW (src))
src_impl = (GdkDrawableImplWin32 *) GDK_WINDOW_OBJECT (src)->impl;
else if (GDK_IS_PIXMAP (src))
src_impl = (GdkDrawableImplWin32 *) GDK_PIXMAP_OBJECT (src)->impl;
else
g_assert_not_reached ();
hdc = gdk_win32_hdc_get ((GdkDrawable *) drawable, gc, GDK_GC_FOREGROUND);
gdk_drawable_get_size (src, &src_width, &src_height);
if ((src_rgn = CreateRectRgn (0, 0, src_width + 1, src_height + 1)) == NULL)
WIN32_GDI_FAILED ("CreateRectRgn");
else if ((draw_rgn = CreateRectRgn (xsrc, ysrc,
xsrc + width + 1,
ysrc + height + 1)) == NULL)
WIN32_GDI_FAILED ("CreateRectRgn");
else
{
if (GDK_IS_WINDOW_IMPL_WIN32 (draw_impl))
{
int comb;
/* If we are drawing on a window, calculate the region that is
* outside the source pixmap, and invalidate that, causing it to
* be cleared. Not completely sure whether this is always needed. XXX
*/
SetRectEmpty (&r);
outside_rgn = CreateRectRgnIndirect (&r);
if ((comb = CombineRgn (outside_rgn,
draw_rgn, src_rgn,
RGN_DIFF)) == ERROR)
WIN32_GDI_FAILED ("CombineRgn");
else if (comb != NULLREGION)
{
OffsetRgn (outside_rgn, xdest, ydest);
GDK_NOTE (MISC, (GetRgnBox (outside_rgn, &r),
g_print ("...calling InvalidateRgn, "
"bbox: %ldx%ld@+%ld+%ld\n",
r.right - r.left - 1, r.bottom - r.top - 1,
r.left, r.top)));
InvalidateRgn (draw_impl->handle, outside_rgn, TRUE);
}
DeleteObject (outside_rgn);
}
#if 1 /* Don't know if this is necessary XXX */
if (CombineRgn (draw_rgn, draw_rgn, src_rgn, RGN_AND) == COMPLEXREGION)
g_warning ("gdk_win32_blit: CombineRgn returned a COMPLEXREGION");
GetRgnBox (draw_rgn, &r);
if (r.left != xsrc || r.top != ysrc ||
r.right != xsrc + width + 1 || r.bottom != ysrc + height + 1)
{
xdest += r.left - xsrc;
xsrc = r.left;
ydest += r.top - ysrc;
ysrc = r.top;
width = r.right - xsrc - 1;
height = r.bottom - ysrc - 1;
GDK_NOTE (MISC, g_print ("... restricted to src: %dx%d@+%d+%d, "
"dest: @+%d+%d\n",
width, height, xsrc, ysrc,
xdest, ydest));
}
#endif
DeleteObject (src_rgn);
DeleteObject (draw_rgn);
}
if (GDK_IS_PIXMAP_IMPL_WIN32 (src_impl))
blit_from_pixmap (use_fg_bg, draw_impl, hdc,
(GdkPixmapImplWin32 *) src_impl, GDK_GC_WIN32 (gc),
xsrc, ysrc, xdest, ydest, width, height);
else if (draw_impl->handle == src_impl->handle)
blit_inside_window (src_impl, hdc, xsrc, ysrc, xdest, ydest, width, height);
else
blit_from_window (hdc, src_impl, xsrc, ysrc, xdest, ydest, width, height);
gdk_win32_hdc_release ((GdkDrawable *) drawable, gc, GDK_GC_FOREGROUND);
}
static void
gdk_win32_draw_image (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
g_assert (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable));
_gdk_win32_blit (TRUE, (GdkDrawableImplWin32 *) drawable,
gc, (GdkPixmap *) image->windowing_data,
xsrc, ysrc, xdest, ydest, width, height);
}
static gint
gdk_win32_get_depth (GdkDrawable *drawable)
{
/* This is a bit bogus but I'm not sure the other way is better */
return gdk_drawable_get_depth (GDK_DRAWABLE_IMPL_WIN32 (drawable)->wrapper);
}
static GdkVisual*
gdk_win32_get_visual (GdkDrawable *drawable)
{
return gdk_drawable_get_visual (GDK_DRAWABLE_IMPL_WIN32 (drawable)->wrapper);
}
HGDIOBJ
gdk_win32_drawable_get_handle (GdkDrawable *drawable)
{
return GDK_DRAWABLE_HANDLE (drawable);
}
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